Sunday, Nov 25, 2012 - 8:00 AMThe Emmy-nominated documentary WALKING INTO THE UNKNOWN traces the intimate journey of an American Indian physician and national health columnist as he navigates the health care system and gains a deeper understanding of himself and his health risks. Dr. Arne Vainio works on the Fond du Lac (Ojibwe) Reservation in northern Minnesota, where his Native patients face grim health statistics. His impending 50th birthday - coupled with his frustration with middle-aged Native men who avoid health screenings - prompts a revelation: he needs to heed his own advice. D